Patents by Inventor Kazushi Usui
Kazushi Usui has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6063265Abstract: A process for producing a hydrodesulfurization catalyst is disclosed, comprising impregnating an inorganic oxide carrier containing a crystalline aluminosilicate with a solution consisting of Group VI metal oxide, a Group VIII metal oxide, and phosphorus. Also disclosed is a process for deep hydrodesulfurization of a gas oil fraction using said catalyst to obtain gas oil having an extremely low sulfur content.Type: GrantFiled: May 6, 1997Date of Patent: May 16, 2000Assignees: Cosmo Oil Co., Ltd., Petpoleum Energy CenterInventors: Osamu Chiyoda, Kazushi Usui, Mitsugu Yumoto, Kazuo Idei, Etsuo Suzuki, Katsuyoshi Ohki, Takashi Fujikawa, Hatsutaro Yamazaki, Shunji Kitada
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Patent number: 5853679Abstract: A process for removing nitrogen oxide from exhaust is disclosed, comprising contacting exhaust containing nitrogen oxide with an alumina catalyst which contains not more than 0.5% by weight of an alkali metal and/or an alkaline earth metal and has a total pore volume of from 0.48 to 1.2 cm.sup.3 .multidot.g.sup.-1 with 0.26 to 0.6 cm.sup.3 .multidot.g.sup.-1 of the total pore volume being formed of pores of not greater than 80 .ANG. or has a volume of pores formed of pores of not greater than 60 .ANG. of from 0.06 to 0.2 cm.sup.3 .multidot.g.sup.-l and which may have supported thereon tin in an oxidative atmosphere containing excess oxygen in the presence of a hydrocarbon or an oxygen-containing organic compound.Type: GrantFiled: October 17, 1996Date of Patent: December 29, 1998Assignees: Japan as Represented by Director General of Agency of Industrial Science and Technology, Petroleum Energy Center, Cosmo Oil Co., Ltd., Sakai Chemical Industry Co., Ltd.Inventors: Mitsunori Tabata, Masaaki Kawatsuki, Katsumi Miyamoto, Hiroshi Tsuchida, Tomohiro Yoshinari, Kazushi Usui, Fujio Suganuma, Tadao Nakatsuji, Hiromitsu Shimizu, Ritsu Yasukawa, Hideaki Hamada, Takehiko Ito, Yoshiaki Kintaichi, Motoi Sasaki
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Patent number: 5494875Abstract: A carrier suitable for preparing a catalyst for hydrofining hydrocarbon oils which has a high ability to eliminate metals contained in the hydrocarbon oils and an improved metal tolerance as well as said catalyst are provided.The carrier of the present invention is an alumina-containing carrier which shows a peak at 2.theta. of 27.degree. in the powder X-ray diffraction pattern when carrying Mo and Co or one or more other metals selected from among metals of the groups VIA and VIII in the periodic table together with Mo and Co.Type: GrantFiled: July 13, 1993Date of Patent: February 27, 1996Assignees: Cosmo Research Institute, Cosmo Oil Co., Ltd.Inventors: Kazushi Usui, Shigenori Nakashizu, Kentarou Ishida, Eiko Kogure
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Patent number: 5444033Abstract: A catalyst composition for hydrotreating of hydrocarbon oils is disclosed. The composition comprises a Group VIB metal in an amount of 5-30% by weight, as oxide, and a Group VIII metal in an amount of 1-10% by weight, as oxide, wherein said Group VIB metal and said Group VIII metal are distributed with a concentration gradient which becomes higher from the surface toward the center of a catalyst particle according to the formulas, 0.9>h.sub.2 /h.sub.1 .gtoreq.0, wherein h.sub.1 is the Group VIB metal concentration at the center of the catalyst particle and h.sub.2 at the outermost surface of the catalyst particle, and 0.9>h.sub.4 /h.sub.3 .gtoreq.0, wherein h.sub.3 is the Group VIII metal concentration at the center of the catalyst particle and h.sub.4 at the outermost surface of the catalyst particle.Type: GrantFiled: June 6, 1994Date of Patent: August 22, 1995Assignees: Cosmo Research Institute, Cosmo Oil Co., Ltd.Inventors: Kazushi Usui, Shigenori Nakashizu, Kentarou Ishida
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Patent number: 5336476Abstract: A process for reducing nitrogen oxides to nitrogen from exhaust gases is disclosed, which involves bringing an exhaust gas containing nitrogen oxides into contact with at least one catalyst from proton-type zeolites, zeolites of an alkali metal exchanged form and acidic metal oxides, by reaction with a hydrocarbon or an oxygen-containing organic compound in an oxidizing atmosphere containing excess oxygen. A process which further involves bringing the exhaust gas into contact with an oxidizing catalyst subsequent to the above process.Type: GrantFiled: October 27, 1992Date of Patent: August 9, 1994Assignees: Agency of Industrial Science and Technology, Cosmo Research InstituteInventors: Yoshiaki Kintaichi, Hideaki Hamada, Takehiko Ito, Motoi Sasaki, Mitsunori Tabata, Kazushi Usui
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Patent number: 5248412Abstract: A process is described for producing a catalyst composition for hydrodesulfurization of hydrocarbon oil, which comprises:drying and calcining a carrier comprising alumina or an alumina-containing material impregnated with a solution mixture of(A) at least one of an alkoxide, a chelate compound, or a glycoxide of molybdenum or chromium;(B) at least one of an alkoxide, a chelate compound, or a glycoxide of cobalt or nickel; andan organic solvent capable of dissolving (A) and (B).Also described is a process for hydrodesulfurizing hydrocarbon oil using the same catalyst composition.Type: GrantFiled: February 20, 1992Date of Patent: September 28, 1993Assignees: Cosmo Research Institute, Cosmo Oil Co., Ltd.Inventors: Takashi Fujikawa, Kazushi Usui, Katsuyoshi Ohki
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Patent number: 5244858Abstract: A catalyst composition for the hydrodesulfurization of a hydrocarbon oil, comprising a composite of metal oxides comprising:aluminum; andat least one metal selected from a group consisting of(A) at least one metal belonging to Group VIB of the Periodic Table; and(B) at least one the metal belonging to Group VIII of the Periodic Table;where the at least one metal belonging to Group VIB of the Periodic Table accounts for, in terms of as oxide, from 10 to 60% by weight with respect to the total catalyst, and the at least one metal belonging to Group VIII of the Periodic Table accounts for, in terms of oxide, from 3 to 20% by weight with respect to the total catalyst, and wherein no peak assigned to Y-Al.sub.2 O.sub.3 is present in X-ray diffraction.Type: GrantFiled: September 24, 1992Date of Patent: September 14, 1993Assignees: Cosmo Research Institute, Cosmo Oil Co., Ltd.Inventors: Kazushi Usui, Takashi Fujikawa, Katsuyoshi Ohki
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Patent number: 5227145Abstract: A process for removing nitrogen oxides from an exhaust gas by bringing the exhaust gas containing nitrogen oxides into contact with at least one catalyst selected from a polyvalent metal phosphate, a polyvalent metal sulfate or an aluminate of a transition metal of the 4th period of the Periodic Table in an oxidizing atmosphere containing excess oxygen and in the presence of a hydrocarbon or an oxygen containing organic compound. There is also disclosed a process for removing nitrogen oxides from an exhaust gas which comprises bringing the exhaust gas into contact with the above catalyst and then with an oxidation catalyst.Type: GrantFiled: December 31, 1991Date of Patent: July 13, 1993Assignees: Agency of Industrial Science and Technology, Petroleum Energy Center, Cosmo Oil Co., Ltd., Sakai Chemical Industry Co., Ltd.Inventors: Yoshiaki Kintaichi, Hideaki Hamada, Takehiko Ito, Motoi Sasaki, Fujio Suganuma, Mitsunori Tabata, Akihiro Kitazume, Kazushi Usui, Tadao Nakatsuji, Hiromitsu Shimizu
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Patent number: 5187133Abstract: A catalyst composition for the hydrotreatment of hydrocarbon oils is disclosed. The composition comprises at least one metal compound having hydrogenating activity belonging to a Group VIB or Group VIII carried on a carrier comprising 2-35% by weight of zeolite and 98-65% by weight of alumina or an alumina-containing substance, wherein, (A) said alumina or alumina-containing substance (1) has a mean pore diameter of 60-125 angstrom and (2) contains the pore volume of which the diameter falls within .+-.10 angstrom of the mean pore diameter of 70-98% of the total pore volume, (B) said zeolite (3) has a mean particle size of 6 .mu.m or smaller and (4) contains particles of which the diameter is 6 .mu.m or smaller of 70-98% of all zeolite particles. It has both high hydrodesulfurization and high cracking capabilities at the same time, and can selectively crack the heavy fractions which have once been hydrotreated, yielding lighter fractions.Type: GrantFiled: March 18, 1991Date of Patent: February 16, 1993Assignees: Cosmo Oil Co., Ltd., Petroleum Energy CenterInventors: Tomohiro Yoshinari, Kazushi Usui, Yasuo Yamamoto, Mitsuru Ohi
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Patent number: 5182250Abstract: A catalyst composition for the hydrodesulfurization of a hydrocarbon oil, comprising a composite of metal oxides comprising:aluminum; andat least one metal selected from a group consisting of(A) at least one metal belonging to Group VIB of the Periodic Table; and(B) at least one the metal belonging to Group VIII of the Periodic Table;where the at least one metal belonging to Group VIB of the Periodic Table accounts for, in terms of as oxide, from 10 to 60% by weight with respect to the total catalyst, and the at least one metal belonging to Group VIII of the Periodic Table accounts for, in terms of oxide, from 3 to 20% by weight with respect to the total catalyst; and a process for producing a catalyst composition for the hydrodesulfurization of a hydrocarbon oil comprising a composite of a metal oxide containing aluminum, at least one metal belonging to Group VIB of the Periodic Table, and at least one metal belonging to Group VIII of the Periodic Table, which comprises:drying and thereafter calcining an effType: GrantFiled: March 25, 1991Date of Patent: January 26, 1993Assignees: Cosmo Research Institute, Cosmo Oil Co., Ltd.Inventors: Kazushi Usui, Takashi Fujikawa, Katsuyoshi Ohki
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Patent number: 5137859Abstract: A process is described for producing a catalyst composition for hydrodesulfurization of hydrocarbon oil, which comprises:drying and calcining a carrier comprising alumina or an alumina-containing material impregnated with a solution mixture of(A) at least one of an alkoxide, a chelate compound, or a glykoxide of molybdenum or chromium;(B) at least one of an alkoxide, a chelate compound, or a glykoxide of cobalt or nickel; andan organic solvent capable of dissolving (A) and (B). Also described is a process for hydrodesulfurizing hydrocarbon oil using the same catalyst composition.Type: GrantFiled: March 29, 1991Date of Patent: August 11, 1992Assignees: Cosmo Research Institute, Cosmo Oil Co., Ltd.Inventors: Takashi Fujikawa, Kazushi Usui, Katsuyoshi Ohki
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Patent number: 5002919Abstract: A catalyst composition for the hydrogenation of heavy hydrocarbon oil comprising at least one active ingredient for hydrogenation supported on a porous refractory oxide carrier and which has the following characteristics:(1) the mean pore diameter of the pores thereof is in the range of 130 to 250 .ANG.;(2) the volume of pores having a pore diameter within .+-.30 .ANG. of the mean pore diameter is in the range of from not less than 30% to less than 60% of the total volume of the pores;(3) the volume of pores having a pore diameter of not larger than 80 .ANG. is not more than 13% of the total volume of the pores;(4) the volume of pores having a pore diameter of not smaller than 350 .ANG. is not more than 25% of the total volume of the pores; and(5) the ratio (mm.sup.2 /mm.sup.3) of the outer surface of a molded catalyst particle to the volume thereof is in the range of 3 to 8.Type: GrantFiled: August 16, 1989Date of Patent: March 26, 1991Assignee: Cosmo Oil Company & Petroleum Energy CenterInventors: Hatsutaro Yamazaki, Takeshi Tomino, Kazushi Usui, Tomohiro Yoshinari, Takuo Suzuki
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Patent number: 4981832Abstract: A catalyst composition for the hydrogenation of heavy hydrocarbon oil, where the catalyst composition comprises at least one active ingredient for hydrogenation supported on a porous alumina carrier and has the following characteristics: (1) the total volume of the pores therein is from 0.4 to 1.0 ml/g; (2) the mean pore diameter of pores having a pore diameter of from 5 to 400 .ANG. is from 60 to 140 .ANG.; (3) the volume of pores having a pore size within .+-.25% of the mean pore diameter of pores having a pore diameter of from 5 to 400 .ANG. is from 60 to 98% of the volume of pores having a pore diameter of from 5 to 400 .ANG.; (4) the volume of pores having a pore diameter of from 400 to 5000 .ANG. is from 2 to 9% of the total volume of the entire pores; (5) the ratio (mm.sup.2 /mm.sup.3) of the outer surface area of a molded catalyst powder to the volume thereof is from 4 to 8; and (6) all points in the interior of the molded catalyst particle are positioned within 0.05 to 0.Type: GrantFiled: July 3, 1989Date of Patent: January 1, 1991Assignee: Research Association for Residual Oil ProcessingInventors: Kinya Tawara, Kazuyoshi Kudoh, Kazushi Usui, Tomohiro Yoshinari, Shigenori Nakashizu
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Patent number: 4912353Abstract: A two-piece motor stator having; a generally annular inner iron stator core having a plurality of teeth extending radially outwardly from outer surface thereof, an annular outer iron stator core having slots in the inner surface thereof for receiving tip portions of the teeth, and coils provided around body portions of the teeth respectively before the inner and outer iron cores are combined together by press fitting, wherein the outer iron stator core has a plurality of channels made in the inner surface, the channels being formed along each of the slots for absorbing stress resulting from press fitting the tip portions into the slots in order to reduce the degree of deformation of the inner and outer stator iron cores. The channels may be made in the tip portions of the teeth instead of the inner surface of the outer iron stator. The channels also may be filled with a deformable and magnetically soft material.Type: GrantFiled: October 3, 1988Date of Patent: March 27, 1990Assignee: Mitsushita Electric Industrial Co., Ltd.Inventors: Genki Kondo, Kazushi Usui
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Patent number: 4585748Abstract: A hydrocarbon conversion crystalline catalyst composition is described comprising 5 to 90% by weight of a crystalline aluminosilicate zeolite, 5 to 90% by weight of a porous inorganic oxide, 1 to 20% by weight of a Group VI metal component (calculated as the corresponding oxide), 0 to 7% by weight of a Group VIII metal component (calculated as the corresponding oxide), and at least one of phosphorus and boron components. The weight ratio of the amount of the phosphorus+boron components (calculated as elemental phosphorus and elemental boron) to the Group VI metal component (calculated as the corresponding oxide) is from 0.01:1 to 0.08:1 and the weight ratio of each of phosphorus and boron to the Group VI metal component is below 0.045:1. This composition is prepared by contacting a support comprising the crystalline aluminosilicate zeolite and inorganic oxide with a solution containing a Group VI metal component and at least one phosphorus or boron component.Type: GrantFiled: May 25, 1984Date of Patent: April 29, 1986Assignee: Research Association for Residual Oil ProcessingInventors: Kazushi Usui, Kinya Tawara